What is an open house party?

An open house party is typically a casual event held in an individual's house where guests are invited to drop in and stay for a while. The party is usually held during the day or early evening, with guests free to arrive and leave at any time convenient for them. Food and drinks are often served, but guests may also be asked to bring a dish or beverage to share with others. A casual dress code is typically requested for open house parties. Open house parties can be organized for a variety of occasions, such as graduation, housewarming, new job, or holiday celebrations.